Answer:
They all arrive at the station at the same time after 120 minutes.
Step-by-step explanation:
For solving these types of question we use Least Common Multiples (L.C.M.).
Since for getting a common time they will meet, we interested in a multiplier.
Now, We will take L.C.M. of all the numbers:
10 = 2 × 5
8 = 2 × 2 × 2
12 = 2 × 2 × 3
∴ L.C.M. = 2 × 2 × 2 × 3 × 5 = 120 {taking smallest common multiples)
Thus, they all lines will meet after 120 minutes.
